Fastening device



Oct. 26 1926. 1,604,330

J. J. WITKowsKn FASTENING DEVICE Filed May 27, 1926 FIGA-' Patented Oct.26, 1926.

PATENT OFFICIEL JAMES J. WITKOWSKI, F ALBION, NEW YORK.

FASTENING DEVICE.

Application-med May 27,

This invention relates to fastening devices for trap doors such as usedin the i'loors of motor cars over storage batteries and other parts,which trap doors have to be removed and replaced frequently; and itconsists in the novel construction and combination of the partshereinafter fully described and claimed.

ln the drawings, Figure 1 is a side vie 1o ot afastening deviceconstructed according to this invention, showing a portion of the trapdoor and its seat infsection. Fig. 2 is a plan view ot' the fasteningdevice, from above. Fig. 3 is a plan View of the/fastenxs ing device,from below.

Each corner of the trap door'5 is preferably provided with a similarfastening device, to hold the trap door on its seat 6, which may be aportion ot' the vchassis beam and ce floor of a motor car. A cylindricalpin 7 is provided having a circular head 8, and isY journaled in a holein the trap door. The

head 8 has a slot 9 so--that it can berevolved by a screw-driver, Thelower-part IO-of-the .5 pin below the trap door is square, and has alarge washer 12 on it next to the trap door. Washers 120i differentthickness are used to adapt thc device to doors and seats of differentsizes or proportions. A locking tongue 14; is provided, and has a hub 15which is slid loosely upon the square vpart 10 of the pin.

l'he upper side of the tongue is rounded longitudinally and transverselyso that it can 1926. Serial No. 112,184.

bear freely against the underside of the seat I low the hub 15, and is asplit Washer bent.

to helical form. A small ordinary,Washer 17 is slipped on the pinagainst the spring 4 washer, and the locking tongue and the washers areheld in place on the pin by a tapered cross-pin 18 inserted in a holeformed crosswise through the lower end portion of the rectangular part10. The spring washer is contracted a little when the loc-king tongue isturned forcibly to lock the trap door to its seat, and it prevents thetrap. door' from rattling, and the tongue from working around.

lVhat I claim is:

A locking device for a trap door, comprising 'a pin having a cylindricalportion and a cylindrical head adapted to be let into and journaled in ahole in the trap door, said 5,5 head having a slot for a tool forrevolving the pin from one side of the trap door, said pin having alrectangular portion adapted to project on the other side of thetrapdoor a locking tongue for the trap door mounte loosely on the saidrectangular portion, and a spring device mounted on the lree end portionof the pin to press the locking tongue against the seat of the trapdoor.

In testimony whereof I have aliixed my 65 signature.

JAMES J. WrrKoWsKI.

